I got a 5.7 Vortec cast iron block that I was considering building up for my Camaro. The block came out of a 99 Express Van and was trying to decide if I just go with a carb and run it, or go with something I can tune with HPtuners. This Van came with the Electo/Mechanical injector spider, that I dont think will lend itself well to any performance mods. I was wondering if anyone knew if the trucks all had the same injector set up, or if they had injectors I could change.